Born in South Bend, Indiana, Everett received two Golden Globe nominations for his role in the CBS series, which ran from 1969 to 1976.
Everett appeared in numerous films and television series including Centennial, Hagen, Airplane II: The Sequel, Star Command, and Mulholland Drive. He also appeared as a guest star in more than forty television series such as Melrose Place, The Nanny, Touched by an Angel, Diagnosis: Murder, Caroline in the City, Murder, She Wrote, The Red Skelton Show, The Man from U.N.C.L.E., and Route 66.
For many years Everett, who had been suffering from lung cancer, was a co-host of the Labor Day Jerry Lewis Telethon which raises money and awareness for and about the affliction of muscular dystrophy,
He also supplied the voice of Ultraman Chuck in the English version of the animated movie Ultraman: The Adventure Begins and voiced several characters in the animated television series The New Yogi Bear Show.
Everett leaves behind two daughters, Katherine Thorp and Shannon Everett. His wife of 46 years, actress Shelby Grant, passed away on June 25, 2011.